cmd/go: `go tool` doesn't list nm, objdump and pprof

[ulikunitz]

Go version

go version go1.25.3 linux/amd64

Output of go env in your module/workspace:

AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/home/kunitz/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/home/kunitz/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2591807187=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/dev/null'
GOMODCACHE='/home/kunitz/work/pkg/mod'
GONOPROXY='github.com/ulikunitz,doppelwuerfel.de/home/kunitz/git'
GONOSUMDB='github.com/ulikunitz,doppelwuerfel.de/home/kunitz/git'
GOOS='linux'
GOPATH='/home/kunitz/work'
GOPRIVATE='github.com/ulikunitz,doppelwuerfel.de/home/kunitz/git'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/kunitz/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='on'
GOTELEMETRYDIR='/home/kunitz/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/home/kunitz/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.25.3'
GOWORK=''
PKG_CONFIG='pkg-config'

What did you do?

I executed

$ go tool

go help tool contains the sentence

With no arguments it prints the list of known tools.

So I expected that it contains nm, objdump and pprof, which I can all execute via go tool.

Note I commented on #71663, but I got the recommendation to create a separate issue.

What did you see happen?

go tool returned

asm
cgo
compile
cover
link
preprofile
vet

What did you expect to see?

I expected to see at least

asm
cgo
compile
cover
link
nm
objdump
pprof
preprofile
vet

[dmitshur]

CC @golang/command-line.

[matloob]

Oh, we need to make sure we also list the tools that would be built as needed.

[ulikunitz]

Yes, it looks like that go tool lists only the content of GOTOOLDIR and the tools referenced in the go.mod file, but not the dynamically built tools.

[gabyhelp]

Related Issues

• cmd/go: built-in tools built on demand don't respect most of the build settings #74620 (closed)

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